www.adobe.com had been causing trouble for a while. It was not showing on any browser (Safari,Firefox and Chrome). I couldn't fond any details on how to resolve this, mainly as I was not searching for exactly the right thing. Though, there is very little information on this, I only finally came to the solution when I searched for the term "Firefox can't establish a connection to the server at www.adobe.com". I did not search this as Firefox is not my main browser.

The solution was to do with "/etc/hosts", but I could not find any such file or directory. The entries in the hosts file were disabling adobe.com:127.0.0.1 hl2rcv.adobe.com127.0.0.1 t3dns.adobe.com127.0.0.1 3dns-1.adobe.com127.0.0.1 activate.adobe.com127.0.0.1 activate-sea.adobe.com127.0.0.1 activate-sjc0.adobe.com127.0.0.1 activate.wip.adobe.com127.0.0.1 activate.wip1.adobe.com127.0.0.1 adobe-dns.adobe.com127.0.0.1 adobe-dns-1.adobe.com127.0.0.1 practivate.adobe127.0.0.1 practivate.adobe.com127.0.0.1 tpractivate.adobe.newoa127.0.0.1 practivate.adobe.ntp127.0.0.1 practivate.adobe.ipp127.0.0.1 ereg.adobe.com127.0.0.1 ereg.wip.adobe.com127.0.0.1 ereg.wip1.adobe.com127.0.0.1 wip.adobe.com127.0.0.1 wip1.adobe.com127.0.0.1 www.wip.adobe.com127.0.0.1 www.wip1.adobe.com127.0.0.1 wwis-dubc1-vip60.adobe.com

All these and more.

So after doing a bit more searching, I found that these entries had to be deleted, (or just commented out with # to avoid problems [#127.0.0.1 wip.adobe.com])Even though there were explanations on how to do so, I am no Apple Mac expert and had no idea what to do.Then there was one post that just happened to mention some software called GasMask that would hope the host file which can then have those troublesome lines removed or #-commented out. I put an hash(#) next to each one referring to adobe, then saved it.